Air pollution, US cities

Report reveals 2024's most polluted cities, countries: Which US cities made the list?
Data from more than 40,000 air quality monitoring stations in 138 countries, territories and regions were analyzed for the report, IQAir said.
World’s cities are failing on air pollution
By contrast, heavy pollution levels were found in Africa and Central & South Asia. All up, the five most polluted countries were Chad, Bangladesh, Pakistan, Democratic Republic of Congo and India. In Chad, annual PM2.5 levels (91.8 µg/m3) exceeded the WHO recommendation by more than 18 times.
Map Shows US Cities With Worst Air Pollution
According to the ranking in IQAir's 2024 World Air Quality Report, these are the 10 U.S. cities with the worst pollution in North America: While eight of the most polluted U.S. cities in North America were in California, with the remaining two in Texas, the two least polluted regional cities were both located in Hawaii: Waimea and Ocean View.
Conrad K. Sangma to ‘check’ Byrnihat pollution after report ranks town as world’s 'most polluted city'
World Air Quality Report for 2024 published by IQAir says that the border town in Assam recorded an annual average PM2.5 concentration of 128.2 microgram per cubic meter(μg/m3)
U.S. Most and Least Polluted Cities: Check out the list
Air pollution remains a major health risk. In the U.S., California has the most polluted cities, while Hawaii and Washington have the cleanest air.
Most polluted cities in the world — and the U.S. — revealed in annual report
The countries with the worst air quality included Bangladesh and India, according to an annual report from IQAir.
El Paso ranked among most-polluted major U.S. cities in 2024. And 2025 may be worse.
El Paso had the ninth-most polluted air among major U.S. cities in 2024, according to one global report released Tuesday – and that was before a series of intense dust storms last week created some of the worst air quality conditions ever recorded in the city.
India has six of the world's 10 most polluted cities, report shows
Chad, in central Africa, is the world’s most polluted country, while California has the worst air pollution in North America, according to an IQAir report.
The list of the world’s top 20 most polluted cities is out. All but one are in Asia
The cities with the worst air pollution in North America were Ontario, Bloomington and Huntington Park – all in Southern California
Kathmandu ranks fifth among world's most polluted cities
Kathmandu's air quality has deteriorated, making it the fifth most polluted city in the world with an AQI of 180, according to the Air Quality Index.Beijing, Kampala, Delhi, and Kuwait occupy the top four spots,
20 most polluted cities in the world
Air pollution remains a serious global challenge, with some cities experiencing dangerously high levels of fine particulate matter (PM2.5). According to the latest IQAir report, 19 of the 20 most polluted cities in the world are in Asia,
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Which cities in US have worst air quality? New report highlights alarming global trends
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Only seven countries met WHO air quality standards in 2024, data shows
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Particulate matter levels in air exceed WHO limits in majority of world's big cities
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The Countries Improving Air Pollution Most
In the five years between 2019 and 2024, average annual air pollution by particles of 2.5 micrometers in diameter or smaller ...
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Most of the world’s population is breathing dirty air: Report
IQAir study finds that Chad, Bangladesh, Pakistan, India and the Democratic Republic of Congo have the dirtiest air.
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Bangladesh moves to second worst in IQAir's 2024 air quality rankings
Bangladesh has earned the dubious distinction of being the second most polluted country in the world in 2024, with air ...
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Video: LIVE: IQAir leaders hold press conference on their report on global pollution
IQAir leaders hold press conference on their report on global pollution IQAir Global CEO Frank Hammes and IQAir Air Quality ...
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Pakistan remained world's 3rd most polluted country in 2024
Pakistan ranked the third most polluted country in 2024 - when it faced a record smog season - while Chad topped the list, according to an annual report published by Swiss air technology company IQAir ...